How to save a CAS program

[Helge Gabert]

If I try to initialize local variables with the STO key in a CAS program, the program doesn't even compile.

I can change that to :=, e.g., LOCAL a:= 1; the program compiles and runs OK (even multiple times), as long as I don't open the program for editing. Once I try to edit the program, the line now reads LOCAL a; and running the same program as before returns "uninitialized local variable."

So it seems to me that you have to assign values to your local variables on separate lines. Do you even need the local statements? My programs seem to run fine without them.